Hi
There is not OOTB AEM-Signiant integration component available.
As i can see, we can Signiant has JS library for it, you can write a custom component using it.
Example :- https://helpx.adobe.com/experience-manager/using/integrating-jquery-framework-cq.html
// Integrating the JQuery Framework into Adobe Experience Manager, on same lines we can add any JS library.
But can you please share what is the us-case that your are trying to achieve with it?
~kautuk
Kautuk Sahni